Drive mechanism for car-dynamos.



PATENTED JUNE 27, 1905. W. P. RICHARDS.

DRIVE MECHANISM FOR OAR DYNAMOS.

APPLICATION FILED MAY 21, 1904.

[7L van? VNITED STATES Patented June 27, 1905.

PATENT FFICE.

WILLARD F. RICHARDS, OF BUFFALO, YEW YORK, ASSIGNOR TO GOULD COUPLERCOMPANY, OF NE YORK, N. Y.

DRIVE MECHANISM FOR GAR-DYNANIOS.

SPECIFICATION forming part of Letters Patent No. 793,227, dated June 27,1905.

Application filed May 21, 1904. Serial No. 209,060.

To (/j/ whom ['15 71141.1 con/corn.-

Be it known that I, WILLAm) F. Rrouau s, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented new and useful Improvements in Drive Mechanism for Oar-Dynamos,of which the following is a specification.

This invention relates to inclosing and protecting casings for the driveconnections of electric dynamos such as are employed for electriccar-lighting and are mounted on the trucks of railway-cars and drivenfrom the car-axles by chains or belts running around pulleys on thecar-axles and on the armatureshafts of the dynamos.

The casinghereinafterdescribed is specially adapted for use inconnection with a dynamo mounted as fully described in my applicationfor United States Letters Patent, filed November 2, 1903, Serial No.179,480.

The object of the invention is to provide a -asing for the purposestated of simple, strong, and desirable construction which willeffectually exclude snow, ice, water, and dust or dirt from thedrive-gearing and will enable ready access to the gearing for inspectionand repairs.

In the accompanying drawings, Figure 1 is a fragmentary sectionalelevation of a railwaycar truck carrying a dynamo, the drive-gearing ofwhich is inclosed by a protecting-casing embodying the invention. Fig. 2is a horizontal section of the casing, showing portions of the truck anddynamo in plan. Fig. 3 is a transverse sectional elevation through theeasing in line 3 3, Fig. 1. Fig. 4. is a fragmentary transverse sectionthrough the lower portion of the casing in line 4 at, Fig. 1. Fig. 5 isa detail elevation of the hinge for the removable section of the casing.Fig. 6 is a detail bottom plan view of the lock-bolt for the removablesection of the casing.

Like letters of reference refer to like parts in the several figures.

1/ and 7/, Fig. 1, represent, respectively, the end and intermediatetransverse beams of a railway-car truck of ordinary construction, 0 oneof the axles, and (Z the dynamo for supplying the electric car-lightingsystem or for other purposes.

(2 represents the drive belt or chain, which runs around pulleys f and gon the car-axle and dynamo-arnmture shaft, respectively, for driving thedynamo. The dynamo is preferably arranged outside of the end sill of thetruck and is hinged at its bottom to the lower ends of brackets 71,secured to the car-truck, and one of which is shown in the drawings. Theupper portion of the dynamo is connected with the end beam of the truckby cushioning devices, one of which is shown at If.

The manner of mounting the dynamo and the construction of the cushioningdevice is fully described in my said application. As therein explained,the dynamo is ordinarily held stationary, but is capable of a limitedmovement on its hinges toward and from the end beam of the car-truck, sothat when the brakes are applied to stop the car and the truck-frame isthereby shifted relative to the wheels and axles the dynamo can yield toprevent the snapping or stretching of the drive chain or belt. Thedynamo frame or casing is provided at the end adjacent to thebelt-pulley with a projecting bearing sleeve or portion provided with acircular end flange K, and the end face of the dynamo frame or casing isplain or flat.

The protecting and inclosing casing L for the drive belt or chain andpulleys or wheels on the dynamo-sha ft and car-axle is constructed asfollows: It is of substantially rectangular cross-section and tapering,having substantially semicircular large and small ends surrounding,respectively, the pulleys on the caraxle and the dynamo-armature shaft.The main portion of the casing, including the large end, is made ofsheet metal, the pieces of which are riveted together at the corners ofthe easing. The small end of the casing consists of fixed and movable ordetachable malleable or cast iron parts M M, respectively. Theiixed partconstitutes a portion of the main body of the casing and is riveted orotherwise rigidly secured to the sheet-metal part of the casing. Theother part M of the small end of the easing is of substantiallysemicylindrical form and is hinged at its top mi in any convenientmanner to the lixed part. It is held in closed position by a latch-boltm, which is pivoted on the bottom of the fixed part and engages aslotted lug m on the bottom of the movable part, having nuts at its endto be tightened up against the slotted lug m The inner side of the smallend of the casing is provided with an opening N, through which theflanged bearing-sleeve on the dynamo-frame projects into the casing L.This opening is formed partially in the stationary and movable sectionsof the small end of the casing and is elongated horizontally to permitthe above-mentioned movements of the dynamo on its hinges. The bearingsleeve or portion of the dynamo-frame supports the small end of thecasing L, and the flange at its outer end overhangs the upper and loweredges of the opening in the easing to hold the casing up against theplain face of the dynamo-frame and prevent lateral movement thereof onthe bearing-sleeve. ice, dirt, and other foreign substances are thusprevented from entering thecasing L; but the dynamo is permitted to movetoward and from the driving-axle. The hinged part of the small end ofthe casing permits the ready detachment and removal of the dynamo fromthe truck when this is necessary. The casing L is rigid throughout thatis, it is not composed of telescopic sections or parts connected to movetoward and from each other to contract and extend the casing toaccommodate the movements of the dynamo. The large end of the casing issupported from the supportingbrackets for the dynamo by hangers O,suitably secured to the casing and attached to a horizontal bar p .bynuts screwed on the threaded shanks of the hangers. This connectionenables the adjustment of the casing with reference to the driving-axle.end of the, casing is provided with a removable door or section Q, whichis hinged to the stationary portion of the casing. The hinge preferablyconsists, as shown in Fig. 5, of loops or eyes (1, secured to the twosections of the casing, and a detachable pin (1', passing through theeyes. The pintle is provided at one end with a head and at the other endwith a pivoted piece q, adapted to be turned at right angles to thehinge-pin to prevent the accidental disengagement of the pin from theeyes. The hinged door Q is locked in closed position by a latch deviceR, preferably similar to the latch for the hinged section of the smallend of the casing. The upper edges of the sides of the hinged door Qpreferably extend between the lower edges of the side walls of thestationary portion of the casing and flanges or strips 8, secured tosaid side walls of the easing to form practically dust and weather tightjoints between the two parts. The openings 25 in the sides of the casingfor the passage of the car-axle are formed partially in the door Q andpartially in the stationary portion of the casing, so that when thehinged sectionis unlocked and swung open on its hinge the caraxle can bedetached from the truck, or the Snow,

The large pulley can be detached from the axle and removed from thecasing. These openings for the car-axle are of sufficient lengthvertically to permit the usual movements of the axle in the truck. Theside walls of the casing are provided around the openings 23 for thecaraxle with annular pockets t, Figs. 2 and 3, for the reception ofpacking-rings t pockets are preferably formed by the side walls of thecasing and annular plates riveted or otherwise secured to said sidewalls. The casing is provided in its upper portion with a transverseslot 10 for the passage of the end beam of the truck, and the side andtop walls of the casing are preferably provided withoutwardly-projecting flanges a surrounding said slot, which are screwedor otherwise secured to the end beam of the truck to effect a tightjoint.

I claim as my inventionl. The combination of a truck-frame,acaraxle,adynamo movably mounted on said truckframe, drive connectionsbetween said axle and the dynamo-armature shaft, and a relativelystationary casing inclosing said drive connections, said casing havingin one side a slot through which the dynamo-armature shaft passes and ismovable relative to the axle, said side bearing against a plain face onthe dynamo which closes said slot against the entrance of foreignmatter, substantially as set forth.

2. The combination of a truck-frame, a caraxle, adynamo mounted on thetruck-frame to move relative to the axle, drive connections between theaxle and the dynamo-armature shaft, and a rigid casing fixedly securedon the truck-frame and inclosing said drive connections, said casinghaving an overhanging end provided in one side with a slot through whichthe dynamoarmature shaft passes and is movable relative to the axle,said slotted side bearing against a plain face on the dynamo whichcloses the slot against the entrance of foreign matter, substantially asset forth.

3. The combination of a truck-frame, caraxle,a dynamo movabl y mountedonsaid truckframe and having a projecting flanged part and a plain faceadjacent thereto, drive connections between said axle and thedynamoarmature shaft, and a rigid. casing inclosing said driveconnections, said casing having at one end a movable section, saidmovable section and adjacent stationary part of the casing having in oneside a slot through which the flanged part of the dynamo and thedynamoarmature shaft pass, said side bearing against the plain face ofthe dynamo, substantially as set forth.

i/Vitness my hand this 17th day of May, 1904.

WILLARD F. RICHARDS.

Witnesses:

CHAS. W. PARKER, C. M. BENTLEY.

These

